However, vaccine protection was low until the completion of the two-dose regimen, and vaccine effectiveness was observed to decline with increasing age among this elderly population.
I shall be interested to see if efficacy will be improved when study participants have been followed up for longer, or if a greater prime-boost interval is used.
It showed low concentrations of antibodies present six months after two doses of CoronaVac and largely undetectable neutralizing antibodies.
Jokowi added that the government plans to receive another 1.
In June 2021, China authorized the CoronaVac vaccine for children.
Including this new production line, Sinovac's annual capacity of CoronaVac has reached 2 billion doses.